- Companies
- Civil engineering
- Aberdare
- Duraseal Limited
Duraseal Limited
- Company number
- 04298012
- Incorporated
- 3 Oct 200125 years trading
- Registered office
- Gelli Uchaf Farm Greys Road, Llwydcoed, Aberdare, Rct, CF44 0BJ
- Nature of business
- Construction of other civil engineering projects n.e.c.; Roofing activities; Wholesale of chemical products
Duraseal Limited is a 25-year-old private limited company registered in Aberdare, company number 04298012, one of 23 civil engineering contractors in Aberdare. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £101K (+382.6%) on the year before, to £128K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £354K against £272K owed within a year: 1.3 times cover.
- 13 employees on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £128K | £118K | £354K | £272K | 13 |
| 31 Dec 2023 | £26K | £20K | £322K | £313K | 13 |
| 31 Dec 2022 | £47K | £39K | £366K | £300K | 14 |
| 31 Dec 2021 | £15K | £81K | £410K | £345K | 12 |
| 31 Dec 2020 | £14K | £108K | £417K | £316K | 13 |
| 31 Dec 2019 | -£2,622 | £2,926 | £290K | £276K | 15 |
| 31 Dec 2018 | -£19K | £976 | £208K | £207K | |
| 31 Dec 2017 | -£36K | £5,421 | £177K | £190K | |
| 31 Dec 2016 | -£37K | £13K | £258K | £277K | |
| 31 Dec 2015 | -£54K | £26K | £239K | £285K |
Where Duraseal Limited is registered
The registered office is in Aberdare (CF44), in the Rhondda Cynon Taf local authority area, Wales. Show CF44 0BJ on a map.
Other trade companies in CF44
- Site Impact Reduction LtdBuilders
- Atlas Motorcare LtdMotor traders
- Albannie Internals LtdInstallers
- Omega Electrical & Renewables LimitedElectricians
- Overdrive Shopfitting LtdJoiners and carpenters
- MRG Lofts and Construction LimitedSpecialist contractors
- CB Heating & Plumbing SW LtdPlumbers and heating engineers
- Cav's Green Management LtdLandscapers and gardeners
What happens if Duraseal Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 04298012
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 October 2001 (25 years ago)
- Registered office
- Gelli Uchaf Farm Greys Road, Llwydcoed, Aberdare, Rct, CF44 0BJ
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
Roofing activities (SIC 43910)
Wholesale of chemical products (SIC 46750) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 3 October 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Aberdare
Other active civil engineering contractors registered in Aberdare.
- Farelandscaping and Groundwork Ltd2025
- Form-Fix Concrete Solutions Ltd2014
- Globe Construction Limited2024
- JDM Contractors Ltd2014
- Jonrose Ltd2007
- Llettyshenkin Construction Company Limited2001
- N.W. Contractors Ltd2022
- Omc Technologies (UK) Limited2011
All civil engineering contractors in Aberdare · All trades in Aberdare · Civil engineering across the UK
Frequently asked questions
When are Duraseal Limited's accounts due?
Duraseal Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Duraseal Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Duraseal Limited still trading?
Duraseal Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Duraseal Limited do?
Duraseal Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990); Roofing activities (SIC 43910); Wholesale of chemical products (SIC 46750).
How old is Duraseal Limited?
Duraseal Limited was incorporated on 3 October 2001, 25 years ago.
What is the penalty if Duraseal Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Duraseal Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.